Disc ref 1209/2 Hazen Scale, 30-70mg Pt/l, no reagents required, this disc can only be used with the Nessleriser body WT/85234, cylinders WT/85230 and Daylight unit WT/85232
One in a wide range of test discs containing a series of graded glass filters, which have been pre-calibrated to give direct test readings. The unique feature of Lovibond® test discs is that they incorporate coloured glass filters which are stable and fade free, and are not affected by UV light or extreme environmental conditions. The most widely used discs are listed, however, a full range of over 200 water testing discs are available on request. Discs are supplied in a protective plastic case with instruction sheet.